RickKimball

@-------------------------------------------------------------------------------
@ ws2811_utils.S - write pixel data to ws2811 leds
@-------------------------------------------------------------------------------
@
@ lpc810 cortex-m0+ ARM ASM routine for streaming pixels data
@
@ assumes interrupts are disabled when called
@ assumes 24MHz system clock, flash wait state set to 0
@ assumes P0_2 configured as OUTPUT connected to ws2811 DIN pin
@

RickKimball

#!/bin/bash
#-------------------------------------------------------------------------
# Desc: msp430-stdlst - generate standard asm listings, mixed c++/asm and
#       instruction cycle counts. This code assumes nake430util is in
#       your PATH.
#
# Created: June 12, 2012
#  Author: rick@kimballsoftware.com
#    Date: 03-03-2012
# Version: 1.0.1

RickKimball

#!/usr/bin/env bash
# $Id: build-mspgcc 70 2011-11-05 19:40:36Z ice $
# 2012-02-04 kimballr - modified for latest FSF directory and
#            sourceforge patch file name changes
# 2012-03-13 kimballr - added patches
#
# download, build and install GCC toolchain for MSP430
#
# prerequisites
# - bash

RickKimball

#--------------------------------------------------------------------
# Makefile - for tiny msp430 preemptive kernel 

TARGET = tinyos.elf

# point this to where your CCS is installed
CCS_PATH =? $(HOME)/ti/ccsv6

#ARCH ?= msp430-elf-
ARCH ?= msp430-

RickKimball

/**
 * void delay(uint16 cnt) - using cpu cycle counting busy loop
 *
 * Sit in a tight loop until delayCycles instructions cycles
 * have occurred. Not very power friendly. Not very interrupt
 * friendly. In fact, you should disable interrupts before
 * calling this function to insure accurate results.
 *
 * Note: minimum of 20 cycles
 *

RickKimball

RickKimball

#include "libmaple/ring_buffer.h"
#include "streaming.h"

uint8_t buffer[32];

ring_buffer message_buffer = { buffer, 0, 0, 32 - 1 };

void queue_message(const char *str) {
  while (*str) {
    GPIOC_BASE->BRR = (1 << 13);  // time function using gpio toggle

RickKimball

#include "ringbuffer_e.h"
#include "streaming.h"

uint8_t buffer[32];

ring_buffer message_buffer = { buffer, 0, 0, sizeof(buffer) };

void queue_message(const char *str) {
  while (*str) {
    GPIOC_BASE->BRR = (1 << 13);  // time function using gpio toggle

RickKimball

/*
 * dwt_timer.h
 *
 *  Created on: Jun 15, 2015
 *      Author: kimballr
 */

#ifndef DWT_TIMER_H_
#define DWT_TIMER_H_

RickKimball

/* This is the code that gets called when the processor first starts execution */
/* following a reset event.  Only the absolutely necessary set is performed,   */
/* after which the application supplied entry() routine is called.  Any fancy  */
/* actions (such as making decisions based on the reset cause register, and    */
/* resetting the bits in that register) are left solely in the hands of the    */
/* application.                                                                */

void resetISR(void) {
#ifdef WDTHOLD
    WDTCTL = WDTPW + WDTHOLD;